259947898722 has 54 divisors (see below), whose sum is σ = 598384570563. Its totient is φ = 81540745344.

The previous prime is 259947898583. The next prime is 259947898741. The reversal of 259947898722 is 227898749952.

259947898722 is a `hidden beast` number, since 2 + 59 + 9 + 478 + 9 + 87 + 22 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 166618259721 + 93329639001 = 408189^2 + 305499^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=360519.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 36769404 + ... + 36776472.

Almost surely, 2^259947898722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259947898722

259947898722 is an abundant number, since it is smaller than the sum of its proper divisors (338436671841).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259947898722 is an frugal number, since it uses more digits than its factorization.

259947898722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14180 (or 7091 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 72.

Multiplying 259947898722 by its sum of digits (72), we get a square (18716248707984 = 4326228²).

The spelling of 259947898722 in words is "two hundred fifty-nine billion, nine hundred forty-seven million, eight hundred ninety-eight thousand, seven hundred twenty-two".